Factors Associated With Margin Positivity After Lung Resection Surgery.

INTRODUCTION: The purpose of this study is to utilize a representative national sample to investigate the factors associated with margin positivity after attempted surgical resection. Given the changes in surgical approaches to lung cancer for the last 10 years, margin positivity and outcomes between robotic, video assisted thoracoscopic surgery (VATS) and open surgical resections may vary. METHODS: This retrospective cohort study utilized the National Cancer Database. Patients with non-small-cell lung cancer, 18 or older and who had a surgical lung resection between 2010 and 2019 were included. Demographic data, along with patient-level clinical variables were extracted. Patient-level outcome variables including 30-day, 90-day mortality and readmission rates were analyzed. Univariable and multivariable logistic regression was utilized to assess factors associated with margin positivity. RESULTS: A total of 226,884 patients were identified. Of the total cohort, 9229 had positive margins (4.2%). Patients with positive margins had statistically significant increased 30-day, 90-day mortality, as well as increased readmission rate. Older age, male sex, patients undergoing an open resection, patients who underwent a wedge resection, higher clinical stage, larger tumor size, squamous and adenosquamous histologies, and higher Charlson-Deyo Comorbidity Index were all associated with having a positive margin after resection. CONCLUSION: In conclusion, there was no difference in margin positivity when comparing robotic and VATS resection, however, open resection had increased rates of margin positivity. Increasing tumor size, clinical stage, squamous and adenosquamous histologies, male sex, and patients undergoing a wedge resection were all associated with increased rates of margin positivity.

Hemodynamic Deterioration of Trauma Patients Undergoing Interhospital Transfer.

INTRODUCTION: Organized trauma systems reduce morbidity and mortality after serious injury. Rapid transport to high-level trauma centers is ideal, but not always feasible. Thus, interhospital transfers are an important component of trauma systems. However, transferring a seriously injured patient carries the risk of worsening condition before reaching definitive care. In this study, we evaluated characteristics and outcomes of patients whose hemodynamic status worsened during the transfer process. METHODS: We conducted a retrospective cohort study using data from the Pennsylvania Trauma Outcomes Study database from 2011 to 2018. Patients were included if they had a heart rate ≤ 100 and systolic blood pressure ≥ 100 at presentation to the referring hospital and were transferred within 24 h. We defined hemodynamic deterioration (HDD) as admitting heart rate > 100 or systolic blood pressure < 100 at the receiving center. We compared demographics, mechanism of injury, injury severity, management, and outcomes between patients with and without HDD using descriptive statistics and multivariable regression analysis. RESULTS: Of 52,919 included patients, 5331 (10.1%) had HDD. HDD patients were more often moderately-severely injured (injury severity score 9-15; 40.4% versus 39.4%, P < 0.001) and injured via motor vehicle collision (23.2% versus 16.6%, P < 0.001) or gunshot wound (2.1% versus 1.3%, P < 0.001). HDD patients more often had extremity or torso injuries and after transfer were more likely to be transferred to the intensive care unit (35% versus 28.5%, P < 0.001), go directly to surgery (8.4% versus 5.9%, P < 0.001), or interventional radiology (0.8% versus 0.3%, P < 0.001). Overall mortality in the HDD group was 4.9% versus 2.1% in the group who remained stable. These results were confirmed using multivariable analysis. CONCLUSIONS: Interhospital transfers are essential in trauma, but one in 10 transferred patients deteriorated hemodynamically in that process. This high-risk component of the trauma system requires close attention to the important aspects of transfer such as patient selection, pretransfer management/stabilization, and communication between facilities.

Wedge Resection Outcomes: A Comparison of Video-Assisted and Robot-Assisted Wedge Resections.

BACKGROUND: Quality of oncologic resection for early-stage non-small cell lung cancer (NSCLC) may differ by surgical approach. Minimally invasive surgery has become the standard for surgical treatment of NSCLC. Our study compares quality of wedge resection by video-assisted thoracoscopic surgery (VATS) vs robotic video-assisted thoracoscopic surgery (RVATS). We hypothesized that RVATS would result in higher quality resections and improved patient outcomes. METHODS: A retrospective cohort analysis was completed using the National Cancer Database for patients with clinical stage 1 NSCLC with tumor size ≤2 cm who underwent a minimally invasive surgery wedge resection from 2010 to 2019. Wedge resections approached with RVATS were compared with VATS. A 1:1 propensity score matched analysis was performed. RESULTS: The cohort included 16,559 patients; 80.4% (13,406) received VATS and 18.9% (3153) received RVATS. Compared with RVATS, a VATS approach was associated with a lower likelihood of lymph nodes being examined (59.0% vs 75.2%; P < .001), fewer nodes dissected (median, 4 vs 5; P < .001), and less adjuvant systemic therapy administered (1.3% vs 2.2%; P < .001). Propensity score matching resulted in 2590 balanced pairs. Statistical significance was maintained for likelihood of lymph nodes examined, number of nodes dissected, and adjuvant systemic therapy administered. There was no significant difference in nodal upstaging after propensity score matching (3.7% vs 4.3%; P = .37). CONCLUSIONS: Compared with the VATS approach, wedge resections by RVATS for early-stage NSCLC were more likely to be associated with increased lymph nodes resected. These data may support increased use of RVATS for wedge resections.

Access to Guideline Concordant Care for Node-Positive Non-Small Cell Lung Cancer in the United States.

BACKGROUND: This study sought to determine whether seeking care at multiple Commission on Cancer (CoC) hospitals is associated with different rates of receiving guideline-concordant care (GCC) among patients with non-small cell lung cancer (NSCLC). METHODS: The National Cancer Database was queried for the years 2004 to 2018 for patients with margin-negative pT1 to pT3 N1 to N2 M0 noncarcinoid NSCLC without neoadjuvant therapy. GCC was defined as chemotherapy for pN1 disease and as chemotherapy with or without radiation for pN2 disease. Patients who received care at >1 facility were examined separately. Factors previously associated with barriers to care were compared between groups. Kaplan-Meier analysis with log-rank tests analyzed 5-year overall survival (OS). Propensity score matching was performed to compare the effect sizes of race, insurance status, and income. RESULTS: In total 44,531 patients met inclusion criteria, 11,980 (26.9%) of whom sought care at >1 CoC institution. Among patients with pN1 disease, 5565 (76.7%) received GCC if they visited >1 facility vs 13,995 (68.5%) patients who sought care at 1 facility (P < .001). For patients with pN2 disease, 3991 (84.4%) received GCC if they visited >1 facility vs9369 (77.4%) patients receiving care at 1 facility (P < .001). Visiting >1 facility was associated with higher OS at 5 years (4784 [54.35%] vs 10,215 [45.62%]; P < .001). CONCLUSIONS: Visiting >1 CoC institution is associated with higher rates of GCC for individuals with pN1 to pN2 lung cancer. Patients who received care at >1 facility had higher OS at 5 years. Further study is warranted to identify factors associated with the ability of patients to seek care at multiple facilities.

Is wedge a dirty word? Demographic and facility-level variables associated with high-quality wedge resection.

Objectives: Although sublobar resections have gained traction, wedge resections vary widely in quality. We seek to characterize the demographic and facility-level variables associated with high-quality wedge resections. Methods: The National Cancer Database was queried from 2010 to 2018. Patients with T1/T2 N0 M0 non-small cell lung cancer 2 cm or less who underwent wedge resection without neoadjuvant therapy were included. A wedge resection with no nodes sampled or with positive margins was categorized as a low-quality wedge. A wedge resection with 4 or more nodes sampled and negative margins was categorized as a high-quality wedge. Facility-specific variables were investigated via quartile analysis based on the overall volume and proportion of high-quality wedge or low-quality wedge resections performed. Results: A total of 21,742 patients met inclusion criteria, 6390 (29.4%) of whom received a high-quality wedge resection. Factors associated with high-quality wedge resection included treatment at an academic center (3005 [47.0%] vs low-quality wedge 6279 [40.9%]; P < .001). The 30- and 90-day survivals were similar, but patients who received a high-quality wedge resection had improved 5-year survival (4902 [76.7%] vs 10,548 [68.7%]; P < .001). Facilities in the top quartile by volume of high-quality wedge resections performed 69% (4409) of all high-quality wedge resections, and facilities in the top quartile for low-quality wedge resections performed 67.6% (10,378) of all low-quality wedge resections. A total of 113 facilities were in the top quartile by volume for both high-quality wedge and low-quality wedge resections. Conclusions: High-quality wedge resections are associated with improved 5-year survival when compared with low-quality wedge resections. By volume, high-quality wedge and low-quality wedge resections cluster to a minority of facilities, many of which overlap. There is discordance between best practice guidelines and current practice patterns that warrants additional study.

Intraoperative Versus Preoperative Diagnosis of Lung Cancer: Differences in Treatments and Patient Outcomes.

OBJECTIVES: Non-small cell lung cancer (NSCLC) is frequently diagnosed during surgical resection. It remains unclear if lack of preoperative tissue diagnosis influences likelihood of receipt of guideline-concordant care or postoperative outcomes. METHODS: A retrospective cohort analysis was completed utilizing the National Cancer Database for patients undergoing lung resection with clinical stage 1 NSCLC from 2004 to 2018. Diagnosis during resection was defined as zero days between diagnosis and definitive lung resection. Patients receiving neoadjuvant therapy were excluded. Subgroup analyses were completed by resection type, including wedge resection. RESULTS: The cohort included 91,328 patients, 33,517 diagnosed during definitive resection and 57,811 diagnosed preoperatively. For patients diagnosed preoperatively, median time from diagnosis to surgery was 42 days (interquartile range 28-63 days). Patients diagnosed intraoperatively had smaller median tumor size (1.7 cm vs. 2.5 cm, P < .01) and were more likely to undergo wedge resection (10,668 [31.8%] vs. 7,617 [13.2%], P < .01). Intraoperative diagnosis resulted in lower likelihood of nodal sampling (27,356 [81.9%] vs. 53,183 [92.4%], P < .01) and nodal upstaging (2,482 [9.7%] vs. 7701 [15.5%], P < .01). Amongst patients with intraoperative diagnoses, those treated via wedge resection were less likely to undergo lymph node sampling (5,515 [52.0%] vs. 5,606 [61.1%], P < .01). Amongst patients with positive lymph nodes, patients diagnosed intraoperatively were less likely to receive adjuvant therapy (1,677 [5.0%] vs. 5,669 [9.8%], P < .01). CONCLUSIONS: Preoperative tissue diagnosis of NSCLC is associated with more frequent lymph node harvest, increased rates of upstaging and receipt of adjuvant therapy. Preoperative workup may contribute to increased rates of guideline-concordant lung cancer care.

Defining risk factors for mortality after emergent hiatal hernia repair in the era of minimally invasive surgery.

BACKGROUND: Risk factors for mortality following emergent hiatal hernia (HH) repair in the era of minimally invasive surgery remain poorly defined. METHODS: Data was obtained from the National Inpatient Sample (NIS), National Readmissions Database, and National Emergency Department Sample for patients undergoing HH repair between 2010 and 2018. Univariate and multivariate logistic regression analyses reported with odds ratio (OR) and 95% confidence intervals (CI) were performed to identify factors associated mortality. RESULTS: Via the NIS, mortality rate was 2.2% (147 patients). Via the NEDS, the mortality rate was 3.6% (303 patients). On multivariate analysis, predictors of mortality included age (OR 1.05, CI: 1.04,1.07), male sex (OR 1.49, CI: 1.06,2.11), frailty (OR 2.49, CI: 1.65,3.75), open repair (OR 3.59, CI: 2.50,5.17), and congestive heart failure (OR 2.71, CI: 1.81,4.06). CONCLUSIONS: There are multiple risk factors for mortality after hiatal hernia repair. There is merit to a laparoscopic approach even in emergent settings.

Economic influences on population health in the United States: Toward policymaking driven by data and evidence.

Atheendar S. Venkataramani and colleagues discuss economic factors and population health in the United States.